[ci] #103: Change .gitlab-ci.yml and rm make test rule

Install dev dependencies into the tests jobs to install pytest
Remove `test` rule from the Makefile

.gitlab-ci.yml

@@ -78,8 +78,8 @@ type:
   stage: tests
   image: $DOCKER_IMAGE/$PYTHON_VERSION:latest
   script:
-    - poetry install --no-dev
-    - make tests
+    - poetry install
+    - poetry run pytest
 
 tests-3.6:
   extends: .tests

Makefile

-.PHONY: docs tests check check-format mypy pylint format build deploy deploy_test
+.PHONY: docs check check-format mypy pylint format build deploy deploy_test
 .SILENT: deploy deploy_test # do not echo commands with password
 
 # generate documentation
 docs:
 	cd docs && rm duniterpy.*; poetry run sphinx-apidoc -o . ../duniterpy && poetry run make clean && poetry run make html && cd ..
 
-# run tests
-tests:
-	poetry run python3 -m unittest -f ${TESTS_FILTER}
-
 # check
 check: mypy pylint check-format